. virtual path handling by adding a realpath() cache. (Andi)
. variable fetches. (Andi)
. magic method invocations. (Marcus)
-- Added interface Serializeable. (Stanislav, Marcus)
- Improved extension SPL (Marcus).
. added standard hierarchy of Exception classes
. added interface Countable
. added spl_autoload*() functions
. converted several 5.0 examples into c code
. added class File
+- Added interface Serializeable. (Stanislav, Marcus)
- Added pg_field_type_oid() PostgreSQL function. (mauroi at digbang dot com)
- Added zend_declare_property_...() and zend_update_property_...()
API functions for bool, double and binary safe strings. (Hartmut)